At a particular supermarket, 80 percent of customers have the supermarket club card. Determine the probability that, in a random sample of 10 customers: a. Exactly 4 customers have the supermarket club card. B. At most 2 customers have the supermarket club card. C. At least 7 customers have the supermarket club card.

a) 0.55% probability that exactly 4 customers have the supermarket club card.

b) 0.01% probability that at most 2 customers have the supermarket club card.

c) 87.91% probability that at least 7 customers have the supermarket club card.

Step-by-step explanation:

For each customer, there are only two possible outcomes. Either they have the supermarket club card, or they do not. The probability of a customer having the supermarket club card is independent of other customers. So we use the binoial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.

80 percent of customers have the supermarket club card.

This means that

10 customers.

This means that

a. Exactly 4 customers have the supermarket club card.

This is P(X = 4).

0.55% probability that exactly 4 customers have the supermarket club card.

B. At most 2 customers have the supermarket club card.

0.01% probability that at most 2 customers have the supermarket club card.

C. At least 7 customers have the supermarket club card.

87.91% probability that at least 7 customers have the supermarket club card.

.632

step-by-step explanation:

6 * 1/10 = 3/5

3*0.01 = 0.03

3/5 + 0.03 = .63

2*0.002 = .002

.63 + 0.002 = .632

javeir earned 56 dollors more than kyle so kyle and javier had 14w but javier made 56 dollors more so 14w plus 56 equals 70w so kyle has 14w

step-by-step explanation: hope i plz give me brainliest with the points so this is not constant cause it says last week so its clearly not every week